body‚ it is commonly seen in occupational settings. Contact dermatitis refers to a range of reactions that result from skin contact with a foreign substance. It may appear as an itchy‚ red‚ swollen‚ or blistery rash after contact with an allergen or irritant. Dermatitis is an inflammatory condition of the skin. It can vary in severity. Dermatitis is not infectious‚ so it cannot be passed from one person to another. b) Identify the early and developing signs and symptoms of contact dermatitis.
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cause dizziness‚ muscle weakness‚ seizers and coma. Skin contact: Hazardous (irritant and possible burns). May cause dermatitis Inhalation: hazardous (Lung irritant) Skin contact: slightly hazardous (permeator) (http://www.sciencelab.com/msds.php?msdsId=9927564) Fumaric acid Chronic effects on humans: the substance is toxic to lungs and mucous membranes Ingestion: hazardous Skin contact: slightly hazardous (irritant‚ permeator) (http://www.sciencelab.com/msds.php?msdsId=9927173) 7.
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minutes.1 Quenched each test tube with 250uL of 6M NaOH after five minutes.1 Measured the absorbance of each sample at 405nm and recorded all data.1 Sodium hydroxide is corrosive and an irritant.3 Sodium phosphate is toxic and is a skin and eye irritant.4 Sodium fluoride is corrosive and is a skin and eye irritant.2 Triton X-100 is corrosive and may cause eye and skin irritation.5 All chemicals should be used in the presence of a laboratory instructor and should handled only when wearing gloves and
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Prolotherapy is an irritant that is used to stimulate regeneration. According to the American Association of Orthopaedic Medicine‚ it “stimulates the body’s natural healing processes to strengthen joints weakened by traumatic or over-use injuries”‚ repairing the damaged tendons by producing new fibrous tissues. This is done by injecting an irritant solution directly on the torn ligaments on the shoulder. Prolotherapy works by stimulating
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* Pipette type 1 * Pipette 25 ml * Stir rod * 11cuvette * Spectrophotometer Chemical needs; hazards and safety precautions: 1. Sulphuric acid It is very hazardous in case of skin contact. It is classified as corrosive‚ irritant and permeator. Safety needs: Lab coats‚safety goggles and gloves should be worn to minimize risk of contact. In case of: • Eye Contact: Check for and remove any contact lenses. In case of contact‚ immediately flush eyes with plenty of water
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dizziness‚ hand tremors and coldness in the fingers and toes. Short term effects on the Respiratory System includes: Smoking increases the effect of irritants on any standing allergies‚ as well as irritating the eyes and nose itself. This happens when smoking paralyses the cillia‚ the part of the respiratory system which blocks out irritants. Another result is the increase in incidences of coughs and colds in a smoker. Short term effects on the Digestive System includes: An increase in acid
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using Newton’s Rings Please read additional instructions on the bench for setting up the PC and camera for this experiment Introduction Newton’s rings are interference fringes of equal thickness which are produced in the air film between a convex surface and an optical flat. It is interesting to note that these interference fringes‚ which demonstrate the wave nature of light‚ should be credited to Newton who was the chief proponent of the corpuscular theory. The apparatus is set up as shown (Fig.
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Glass rod To stir the solutions phenolphthalein To use as an indicator Risk assessment Hazard Risk Management Very likely likely possible remote HCL Irritant and can damage eyes Be cautious and wear safety glasses X NAOH Irritant and can cause damage to eyes Be cautious and wear safety glasses X Phenolphthalein Irritant and can cause damage to eyes Be cautious and wear safety glasses X Glass wear Smash +cut yourself Be cautious X
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Periwinkle Pty Limited Case Study A Fringe Benefit is a form of pay that employees pay employees by providing the employee to enjoy certain privileges. Providing a company car for the employee to use is a commonly used fringe benefit that is made available for management and field work workers. Also‚ the company can decide to offer cheaper prices for its employees by availing the services and products to the employees. This allows the employee to access the products of the company at a price that
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------------------------------------------------- Isolation of Caffeine from Coffee Date of laboratory work: 10/9/2012 5:00-7:45 Date of report written: 10/15/2012 Introduction: The purpose is to isolate caffeine from coffee by using the organic solvent dichloromethane (CH2Cl2) that is also referred to as direct contact. Calcium carbonate (CaCO3) is used to remove the tannins from the coffee. Afterwards an extraction is used to separate the organic layer (bottom) from
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